标准摘要
[中文适用范围]： 本文件规定了在标准火灾条件下确定垂直和水平通风管道耐火性的方法。此试验检查暴露于外部火焰（管道 A）和管道内部火焰（管道 B）的管道的行为。本文件旨在与下列文件结合使用：本文件不适用于：a) 耐火性能取决于天花板耐火性能的管道；c) 检查口的门，除非包含在待测管道中；e) 将悬挂装置固定到地板或墙壁上；b) 在穿过防火分隔处时包含防火阀的管道；d) 双面或三面管道；f) 厨房排气管（见 ISO 6944-2）。注：附录 A 提供了一般指导并给出了背景信息。 [外文原描述]： This document specifies a method for determining the fire resistance of vertical and horizontal ventilation ducts under standardized fire conditions. The test examines the behaviour of ducts exposed to fire from the outside (duct A) and fire inside the duct (duct B). This document is intended to be used in conjunction with ISO 834-1. This document is not applicable to: a) ducts whose fire resistance depends on the fire resistance performance of a ceiling; b) ducts containing fire dampers at points where they pass through fire separations; c) doors of inspection openings, unless included in the duct to be tested; d) two-sided or three-sided ducts; e) the fixing of suspension devices to floors or walls; f) kitchen extract ducts (see ISO 6944-2). NOTE Annex A provides general guidance and gives background information.
英文名称Fire containment — Elements of building construction — Part 1: Ventilation ducts